Pictures from the European Space Agency for Planet Mars. ESA's first mission to the Red Planet is Mars Express that contains seven tools to measure the planet's atmosphere, as well as geological structures, including the search for evidence of hidden waters. REUTERS / Ho / European Space Agency ESA
This image taken by the panoramic camera to explore Mars Rover Spirit. This image shows the southwestern plains of Mars landing sites cruising tool. Not much variation in the surface of Mars, though it looks hill about 7-8 miles on the horizon
Martian soil near the landing site of Mars Exploration Rover Opportunity, Meridiani planum. It appears there was a rough stone in the sand. This image comes from NASA's Jet Propulsion Laboratory in Pasadena, California, February 4, 2004.
The sunset on Sol 24 visible through the Mars Pathfinder Imager instrument issued by the Jet Propulsion Laboratory, August 27.
A view that displays the delta Eberswalde crater on Mars. This photo also shows the presence of channels which maintained that fills in the crater lake, located in the southern highlands of Mars. This photo was obtained from the Mars Express on August 15, 2009.
High-resolution stereo camera on the ESA's Mars Express took pictures Echus Chasma on July 14, 2008. Echus Chasma is a 'cut' along the 100 km and about 10 km in the highlands of Lunae planum, north of Valles Marineris, 'Grand Canyon' his Mars.
4 km-high cliff located in the eastern Echus Chasma, one of the largest sources of water on Mars
Mars Exploration Rover "Opportunity" found an iron meteorite in this photo. This is the first meteorite ever found on other planets. Photos released by NASA on January 19, 2005
NASA's Phoenix Mars Lander's Surface Stereo Imager shows two trenches dug by Phoenix's Robotic Arm in this image taken June 8, 2008, the 14th Martian day after landing. Soil from the right trench, informally called "Baby Bear," was delivered to Phoenix's Thermal and Evolved-Gas Analyzer, or bear, on June 6, 2008. Picture taken June 8, 2008
Victoria Crater at Meridiani planum on Mars photographed by NASA's high resolution camera (HiRISE) and released on October 6, 2006
NASA image released in 2011 shows the western edge of the crater Endeavour
Images from Mars Reconnaissance Orbiter shows the Martian surface. Mars researchers discovered dark lines in the valleys of Mars when the warmer months. They believe that it is evidence of salt water that flows
One of the first color images from the Phoenix Mars Lander shows the surface of Mars after the Phoenix Mars Lander spacecraft landed successfully in the first-ever touchdown near Mars' north pole May 25, 2008